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Poster: Steve Nordby Date: May 26, 2008 2:09pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

Yeah it kills some nle's, but at the same bitrate, mpeg4 outperforms mpeg2, and vastly outperforms dv. If the new films come in mp4 encodings at the same bitrate as the old mp2's, I'll be very happy with the quality :)

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Poster: Scribble Date: May 27, 2008 6:38am
Forum: prelinger Subject: Re: Re-transcoding of some important films

Well, I did apologize for being a pest...I'm just suggesting that the value of certain films is historically so great that re-encoding to prevent "blocking" and the "jaggies" would be really nice....

I really do appreciate the archive! I really really really do!

I've usually used after effects to convert the MPEG2s to QT or AVI, I've never attempted to use the MP4s, I've always assumed that due to the smaller size of the file, it was inferior? Was I wrong all this time?

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Poster: Visual16 Date: May 27, 2008 2:31pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

I don't think you were wrong, but in many instances Mpeg-2 isn't as available (except here!) The DVDFlick program I mentioned is so excellent and multipurpose. If you put MP4's in to supposedly make a DVD (or even NOT LOL!) You can "save the ihtermediate files" and out pops hi-qual MPEG-2's for editing in other programs. MP4 is a strange compression, and I'm always happier playing with MPEG-2 despite the filesize. And AVIs get converted nicely, too. The only minor drawback is the result MPEG's are automatically broken into ~1 GIG blocks for DVD's, so they have to be re-connected if the film length is >15 min.

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Poster: Steve Nordby Date: May 27, 2008 6:20pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

I seem to recall reading long ago that the process the Archive used was to transfer the film to BetaSP tape, then make an mpeg2 from tape, then make all the more compressed formats from the mpeg2. I'm pretty sure they aren't doing it that way for new material. The last big addition to the Prelinger Archive a few years ago included "editable" mpeg4 versions. They didn't look quite as good as the mpeg2 version, they were MUCH smaller files.

Mpeg4 is a wide ranging standard that can be anything from low bitrate, postage stamp sized Web video to high definition. H.264 and xvid are both variations on mpeg4.

Anyway, my suggestion to anyone that needs to convert formats is to get ffmpeg. It's a free command line tool that can convert nearly any video format to nearly any other.

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Poster: Scribble Date: May 28, 2008 6:20am
Forum: prelinger Subject: Re: Re-transcoding of some important films

virtualdub with the mpeg plug in is very good as well...

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Poster: Steve Nordby Date: May 31, 2008 11:46am
Forum: prelinger Subject: Re: Re-transcoding of some important films

Yes, virtualdub is another wonderful free video editing tool that people (at least Windows users) in this forum should know about.

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Poster: Steve Nordby Date: May 31, 2008 11:55am
Forum: prelinger Subject: Re: Re-transcoding of some important films

you can simply concatenate mpeg files back-to-back into a single file without doing any processing on the video and end up with a single, playable mpeg file, eg. on a *nix command line:

cat file1.mpg file2.mpg file3.mpg > output.mpg

I've done this with mpeg 1 and 2, and I'll bet it works for VOB files off a dvd since they are just mpeg2.

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Poster: 23_skidoo Date: Jun 1, 2008 10:17am
Forum: prelinger Subject: Re: Re-transcoding of some important films

Gosh, can you believe it's been 5 months now since the announcement was first made that this next wave of uploads would begin in "the next several weeks"?

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Poster: 23_skidoo Date: Jun 11, 2008 4:00pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

It's getting kinda ridiculous.

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Poster: madlobster Date: Jun 12, 2008 11:27pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

I have to admit, it's been a while longer then I thought it would be, but hopefully, a longer delay means more videos for us to watch.

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Poster: Visual16 Date: Jun 14, 2008 12:33am
Forum: prelinger Subject: Re: Re-transcoding of some important films

I hope so too. I've been checking in almost every day to see if there's new stuff. I can remember when the eight part television commercials was missing a part and it took years to get to see it. I wonder if there is an end part to "Look to the Land" (EB film)!!
During this meantime I have been watching YouTube and Google video to help with all the withdrawl symptoms LOL!
The collection called tvdays (tvnetworks/Ira Gallen/VR) is also enormous, although all the films are marked in the bottom corner.
This is a good time for me to say thanks to the Archive for all the incredible stuff from here that I watch just about every day.

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Poster: Rick Prelinger Date: Jun 14, 2008 2:47pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

OK, an update.

We are making the new movie files for the Internet Archive as part of our project to digitize all of our tape library and go tapeless. An ace digital archivist is building an app that will take the new files we're making and generate derivatives for IA, but he is still working on a few fine points, and as of now we have planned to start encoding in mid-July. Since what we plan to do is much bigger than the 500 films we have promised to IA, we just want to get the workflow right and the app debugged before we begin. Honored downloaders and supporters, I respectfully ask for your patience. We are really looking forward to growing the online collection and seeing what wonders people make with it.

Now, may I ask a question?

Most of you have downloaded films (and some of you have downloaded all the films) from our collection. If I produced DVD compilations with the same films, plus supplements and program notes, would you buy them? Trying to do a little market research here and decide whether to take the dive. I'd appreciate hearing your answers -- you can reach me at rick {at} archive.org.

thank you.

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Poster: 23_skidoo Date: Jul 11, 2008 5:48pm
Forum: prelinger Subject: Re: Re-transcoding of some important films

I probably would, especially if you were to organize the films by what company produced them. You know, there could be a Jam Handy compilation DVD, a Sid Davis DVD, Centron, Calvin, Coronet, Jerry Fairbanks, and so forth.